/Engine/Plugins/Experimental/RenderGrid/Source/RenderGrid/Public/Utils/RenderGridUtils.h
Returns a job output directory that's converted to a full path (if it's currently relative) and that also has the project directory path replaced by "{project_dir}" (if the given path contains that string).
static [FString](API\Runtime\Core\Containers\FString) NormalizeJobOutputDirectory ( const [FString](API\Runtime\Core\Containers\FString) & NewOutputDirectory )